A few days ago I noticed that I lost a few points when someone downvoted three answers of mine, each of which had a decent number of upvotes and were the accepted answer, in the span of about 20 seconds. I didn't think much about it and figured that if anything, the script that fixes serial downvotes would catch it. And indeed it did.
However the next day, it appears as if the same twit that did the downvoting did it again on the exact same questions in the same short span of time. No problem I thought, this dude is just wasting everyone's time as the script that ran the previous day would correct it again. Yet when I went to check it the next day, the downvotes remained and hadn't been reversed as they were the first time.
So my question is, is there a problem with the script that handles the serial downvote correction, or can the script be bypassed if you just repeat the same behavior? Also, does the user that did the downvoting get a warning about their behavior, and if they are a repeat offender, does anything else happen?